@misc{indiciae0cd2ed3d1dc6,
  title = {Heavy-mineral suites confirm the wide extent of the Peach Springs Tuff in California and Arizona, U.S.A.},
  author = {S. Gusa and J. E. Nielson and K. A. Howard},
  year = {1987},
  url = {https://pubs.usgs.gov/publication/70014203},
  note = {Source identifier: 70014203}
}